广西革新桥遗址出土的石拍研究

革新桥遗址是一处新石器时代石器制造场遗址。2002年10月至2003年1月发掘,出土数以万计的石制品,还发现两座墓葬。年代为距今6000-5500年前。本文对该遗址中出土的一件石拍进行观察,并就其制作工艺及功能和用途进行探讨。     

试论《武王践祚》的文本流变

《上海博物馆藏战国楚竹书》(七)所收《武王践祚》,实为两种战国"简本"(甲本和乙本)的合抄。传世本则是参考了这两种简本,合编整理而成。与甲本相比,乙本在叙事及文字上更接近于原始的记录,成文应早于甲本。但甲本与乙本之间并没有直接的文本传承关系,应是两系文本发展的不同形态。参照乙本,可以推测《武王践祚》的原初结构,并不包括武王勒铭段。从文献体裁及文章内容看,甲本及传世本的这一段文字,应是合编自其他文献。《武王践祚》三个本子的比较研究显示,早期文献在流传过程中,不仅存在着文字的增饰、丢失与改动等现象,同时还存在着同种文献不同形态的合编整理甚至是不同文献的合并现象。这对我们认识早期文献形成及流传的特殊性,并进而讨论早期文献的史料价值,无疑具有重要的参考意义。     

《坚持四项基本原则》的形成与历史地位

在全面拨乱反正的背景下,理论工作务虚会第一阶段对新中国成立以来的若干重大理论与历史问题进行了热烈讨论,但是会议期间出现了一些不协调的声音,引起中共中央的注意,加之社会上出现的错误思潮,影响了安定团结的局面。在这种情况下,邓小平代表中共中央在全国理论工作务虚会上作了《坚持四项基本原则》的报告,明确提出了"四个坚持"。这个报告在全国理论工作务虚会和随后召开的中央工作会议上引起热烈讨论,各地也很快掀起了一场贯彻学习四项基本原则、进行真理标准讨论"补课"的热潮。随着改革开放事业的发展,四项基本原则作为立国之本的地位被确立起来,并不断被赋予新的时代内涵。     

AN ECOLOGICAL SAFETY SHELTER ESTABLISHED ON THE SNOWY HIGHLAND

<正>On the snowy highland,the splendid view of mountains and waters vie with each other;the birds and beasts stroll idly as in a courtyard,and the flourishing woods and grasses stretch as far as the eyes can see.Is"Shambhala"a fairyland?Over the years,the central government and Tibet have focused on protecting the highland ecology and have attained impressive achievements.Under the blue sky     

DEM Algorithm for Progressive Collapse Simulation of Single-Layer Reticulated Domes under Multi-Support Excitation

In this paper, the Member Discrete Element Method (MDEM) is modified and perfected for three aspects: the algorithm itself, loading and computational efficiency, and to accurately and quantitatively simulate the progressive collapse for large-span spatial steel structures. In addition, the corresponding computational programs are compiled. First, from the perspective of the method, a meshing principle for discrete element models is determined, a treatment for material nonlinearity and strain rate effect is proposed, and a damping model is established. Next, the Displacement Method is introduced to determine the multi-support excitation for the MDEM, and then motion equations of particles under multi-support excitation are derived. On this basis, the specific process of gravitational field loading is presented. Furthermore, parallel implementation strategies for the MDEM based on OpenMP are constructed. Finally, the collapse simulation of a 1/3.5-scaled single-layer reticulated dome shaking table test model under multi-support excitation is carried out. The comparison demonstrates that the ultimate load and failure mode as well as the complete collapse time of the numerical results are consistent with the experimentally measured responses, and the configuration variations from member buckling and local depression until collapse failure are fully captured. Moreover, the displacement time-history curves obtained using MDEM are almost identical to the experimental measurements, and there is a nuance only in the amplitude. It is verified that MDEM is capable of precisely addressing the collapse failure for large-span spatial steel structures. Additionally, the failure mechanism for structures of this type is naturally revealed.     

神话对唐诗的影响

唐诗中存在着大量取材于古代神话的诗作,这反映了神话对唐诗的显著影响,但这一文学现象很少为学界所关注。本文侧重于从美学角度探析唐诗对七类古代神话的运用。唐诗人不是歌咏原生态的古代神话,而是运用它们的象征意义抒情言志。唐诗大量取材古代神话的现象主要与唐代崇尚道教的社会环境及诗人的不幸的人生遭遇等有关。     

辽代琥珀来源的探讨

本文主要以中、西文献记载为依据,结合考古出土以及以往的研究成果,论证辽代的琥珀原材料很可能来自遥远的欧洲波罗的海沿岸.波罗的海琥珀由基辅罗斯北部诺夫哥罗德城,沿伏尔加河南下,到达地中海.再东经黑海、里海,达河中地区.然后经皮毛之路、丝绸之路进入辽境.     

劳动力市场竞争与分割的再认识

马克思在《资本论》中所论述的劳动力买卖、平均利润与生产价格,都是以完全竞争或自由竞争为前提条件的。但是,马克思指出,这是一种"理论上的假定"。这就存在着如何把马克思抽象化的理论运用于活生生的现实的问题。在现实生活中,劳动力市场既有竞争的一面,又有分割的一面,而且二者往往是交错在一起的。     

古典阿拉伯——伊斯兰舆地文献所记欧亚陆路交通

根据阿拉伯——伊斯兰舆地文献,结合汉籍文献记载,考辨了9—10世纪自地中海到中国的陆路交通路线。中亚到中国的道路起于呼罗珊的木鹿,中亚地区的布哈拉、撒马尔罕、扎敏、怛逻斯和碎叶是重要的交通枢纽,而花剌子模是中亚与东南欧及北欧贸易的中心及货物集散地。     

述论佛教戒律的玄化与道化

佛、道两家之间的互相影响,论者已多.但仅就佛教戒律的玄化和道化一个侧面来系统叙述,似未多见,故以此文试说之.